JP2006220712A - Window display method and screen applied to the method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a simple and easily practicable window display method where the pattern of the video of animation is projected for decorative illumination at night in the Christmas season or the like or for other decoration as illumination from a window, or, even in the case of still pictures, displays are frequently changed, and also to provide a screen applied to the method. <P>SOLUTION: Projected light from a projector 10 is discretely condensed in each condensing region in an effective display region 23 including many discrete arrayed lens parts provided on a screen, and the video is reprojected as the video which is made high in luminance even while the resolution is reduced. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a window display method and a screen applied to the method, and in particular, a bright light with high brightness can be obtained even when an ordinary projector is applied, and is applied not only to a business use but also to a window side of a private house. The present invention relates to a window display method and a screen applied to the method.

  In recent years, a window designed to enhance the ability to attract customers by displaying advertisement images for products and events on the glass windows and glass walls of stores and showrooms without blocking the outside view. A display system has been proposed. In this proposal, when projecting an image from a projector installed indoors toward a glass window or a transparent screen on the glass wall side, a transparent screen made of a transparent film is attached to the glass surface on the indoor side of a store or the like. By projecting images on the screen, it is said that it is possible to project images for advertising products and events without obstructing the field of view from outside and without requiring a large space (Patent Literature) 1).

  In addition, there is a proposal to provide a display device that can show an image with excellent contrast and good visibility even in an environment where external light such as sunlight is applied. The proposed display device includes a screen mounted on a window that is exposed to external light, and a projector that projects image light obliquely toward the screen. The screen transmits image light projected from the projector to the viewer side. In this configuration, a Fresnel lens element that deflects the light, a lenticular lens element that diffuses the image light in the horizontal direction, and a light absorbing portion that suppresses reflection of external light.

In this proposal, it is possible to suppress the reflection of external light by a light absorption part that suppresses the reflection of external light on a part of the screen, and to improve the contrast of the image. In addition, a screen with good visibility is projected even in a hit environment, and the screen has a Fresnel lens element that deflects the image light in the direction of the viewer and a lenticular lens element that diffuses the image light in the horizontal direction. It is said that the observer who is outside can observe the image with good contrast projected on the screen (Patent Document 2).
Japanese Patent Laid-Open No. 2002-162686 (paragraph 0020, FIG. 1) Japanese Patent Laying-Open No. 2004-184483 (paragraphs 0005 to 0007, FIG. 1)

None of the technologies proposed in any of the above-mentioned patent documents recognizes the problem of trying to realize a high-brightness window display that can be clearly seen from the outside at night by a simple method. There is no technical disclosure that suggests a way.
The present invention has been made in view of the above situation, and is a decoration as illumination at night and other windows in the Christmas season and the like, and displays a pattern of a moving image, or An object of the present invention is to provide a simple and easy-to-implement window display method capable of frequently changing the display even for a still image and a screen applied to this method.

In order to solve the above-described problems, the present application proposes the following techniques.
(1) A window display method in which an image is projected from a projector onto one main surface side of a transparent screen, and the image is observed from the other main surface side of the screen. The resolution of the image by the image light projected from the projector by condensing each of the condensing areas, which are each small area set by dividing the effective display area of one or both main surfaces into a plurality of Condensation reprojection in which the brightness of the emitted light for each individual condensing region is made higher than that in the corresponding small region of the original image and reprojected from the other main surface side to the outside. A window display method characterized by applying one having a portion formed thereon.

  According to the window display method of (1) above, the image projected from the projector onto the screen is condensed for each of a plurality of condensing areas set to be distributed on either one or both main surfaces of the screen. The resolution of the image is coarser than that of the original image, while the brightness of the emitted light for each individual condensing area is higher than that of the corresponding position (corresponding small area) of the original image, and the other main surface side of the screen. Reprojected to the outside. For this reason, a window display with high brightness that can be clearly seen from the outside at night can be obtained.

(2) As described in (1), the screen is configured such that light collection for each of the plurality of light collection regions is performed by a convex lens portion formed corresponding to each of the plurality of light collection regions. Window display method.
According to the window display method of (2) above, in addition to the action of the window display method of (1), the light is condensed by the convex lens portion for each of the plurality of light condensing areas of the screen and is clearly visible from the outside at night. A window display with high brightness is possible.

(3) The screen may be one in which light is collected by a Fresnel lens portion formed corresponding to each of the plurality of light collection regions. The window display method as described.
According to the window display method of (3) above, in addition to the action of the window display method of (1), the light is condensed by the Fresnel lens portion for each of the plurality of light condensing areas of the screen and is clearly visible from the outside at night. A window display with high brightness can be achieved.

(4) The screen may be one in which the light is collected by the lenticular lens portion formed corresponding to each of the plurality of light collection regions. The window display method as described.
According to the window display method of (4) above, in addition to the action of the window display method of (1), the light is condensed by the lenticular lens portion for each of the plurality of light condensing areas of the screen and is clearly visible from the outside at night. A window display with high brightness can be achieved.

(5) In the above (1), another projector for projecting non-image light for increasing the amount of light superimposed on the image projection area of the one projector that projects an image on one main surface side of the screen is further used. The window display method as described.
According to the window display method of (5) above, in addition to the action of the window display method of (1), a window display with particularly high brightness that can be clearly seen from the outside at night can be obtained.

(6) A window display method in which an image is projected from the projector onto one main surface side of the screen, and the image is observed from the other main surface side of the screen. Incident light from the projector incident on each light receiving surface arranged densely along the main surface is amplified and densely collected corresponding to each light receiving surface along the other main surface. A window display method comprising applying a plurality of active light emitting elements for projecting light from the respective light emitting surfaces arranged outside.

  According to the window display method of (6) above, the incident light from the projector incident on each light receiving surface disposed along one main surface of the screen is amplified and along the other main surface. Incident light from a projector can be amplified by a plurality of active light emitting elements that project light from the respective light emitting surfaces arranged to the outside, and projected from the other main surface side to the outside, so that it can be clearly seen Window display is possible.

(7) A screen applied to a window display method in which an image is projected from a projector onto one main surface side of the screen and the image is observed from the other main surface side of the screen. A plurality of condensing areas are dispersedly set in the effective display area of either one or both of the main surfaces, and the light is projected from the projector by condensing each condensing area, which is each small area that has been dispersedly set. The resolution of the image by the captured image light is made coarser than that in the original image, and the luminance of the emitted light for each of the individual light collection regions is made higher than that in the corresponding small region of the original image so that the other main surface side is exposed to the outside. A screen characterized in that a light condensing reprojection part for reprojection is formed.

  According to the screen of the above (7), when an image is projected from the projector onto one main surface side of the screen, each of the effective display areas set on one or both main surfaces is divided into a plurality of pieces and set. By condensing projection light for each condensing area, which is a small area, the resolution of the image by the image light projected from the projector is made coarser than in the original image, and the emitted light for each individual condensing area Is higher than that at the corresponding position of the original image and is re-projected to the outside from the other main surface side, so that a window display with a high luminance that can be clearly seen from the outside at night can be obtained.

(8) The screen according to (7), wherein the condensing reprojection unit includes a convex lens unit formed corresponding to each of the plurality of condensing regions.
According to the screen of (8) above, in addition to the action of the screen of (7), the condensing is performed by the convex lens portion formed corresponding to each of the plurality of condensing regions, and is clearly visible from the outside at night. A window display with high brightness is possible.

(9) The screen according to (7), wherein the condensing reprojection unit includes a Fresnel lens unit formed corresponding to each of the plurality of condensing regions.
According to the screen of (9) above, in addition to the action of the screen of (7), the light is condensed by the Fresnel lens portion formed corresponding to each of the plurality of light condensing areas, and is clearly visible from the outside at night. A window display with high brightness can be achieved.

(10) The screen according to (7), wherein the condensing reprojection unit includes a lenticular lens unit formed corresponding to each of the plurality of condensing regions.
According to the screen of (10) above, in addition to the action of the screen of (7), light is condensed by a lenticular lens portion formed corresponding to each of a plurality of light condensing areas, and is clearly visible from the outside at night. A window display with high brightness can be achieved.

(11) A screen applied to a window display method in which an image is projected from a projector onto one main surface side of the screen, and the image is observed from the other main surface side of the screen. Incident light from the projector incident on each light receiving surface arranged densely along the main surface of the projector is amplified to correspond to each light receiving surface along the other main surface. A screen comprising a plurality of active light emitting elements for projecting light from the light emitting surfaces arranged in a collective manner to the outside.

  According to the screen of (11) above, the other main surface is obtained by amplifying the incident light incident on the light receiving surface that receives the projection light from the projector side and is densely assembled along one main surface. A plurality of active light emitting elements for projecting light from the light emitting surfaces arranged densely corresponding to the respective light receiving surfaces along the light source are disposed. As a result, a high-luminance window display that can be clearly seen from the outside at night can be obtained.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings to be referred to below, for the sake of convenience, the main part that is the subject of the description is exaggerated as appropriate, and other than the main part is appropriately simplified or omitted.
FIG. 1 is a diagram showing a window display method according to an embodiment of the present invention. In FIG. 1, this window display method projects an image from a known general projector 10 onto one main surface 21 side of a transparent screen 20 and observes the image from the other main surface 22 side of the screen 20. It is intended to be done. The transparent screen 20 is attached to a window glass of a house that can be looked out from the outside, and thus can be easily seen from the outside, or can be expanded along the inside of the window glass by an appropriate means. It is hung.

  Therefore, the other main surface 22 side of the screen 20 is a front surface facing the outside of the house, and the one main surface 21 side is a back surface on the opposite side. The effective display area 23 of one or both of the front surface 22 and the back surface 21 of the transparent screen 20 is the most area except the peripheral edge of the main surface of the transparent screen 20, and this effective display area 23. Is divided into a plurality of light condensing areas. For example, an effective display area 23 is formed as a set in which rectangular small areas (that is, individual light converging areas) serving as display units are vertically and horizontally aligned.

  FIG. 2 is a diagram schematically showing the state of the effective display area 23 on the front surface 22 of the screen 20 of FIG. As shown in FIG. 2, the effective display area 23 of the front surface 22 of the screen 20 is, for example, a plurality of (very large) small areas 231 and 231 each having a square shape with a side of several millimeters to several tens of millimeters. It is divided into the condensing area which is. In other words, the effective display area 23 collects the light incident from the incident surfaces for each of the individual condensing areas 231 and 231, thereby reducing the resolution of the image by the image light projected from the projector 10. Condensation is made to be rougher than in the above, and the luminance of the emitted light for each individual condensing area is made higher than that in the corresponding small area of the original image and reprojected to the outside from the other main surface (front surface) 22 side. A reprojection is formed.

FIG. 3 shows a convex lens portion formed for condensing light incident from the incident surfaces corresponding to each of the individual condensing regions 231 and 231 of the effective display region 23 described with reference to FIG. FIG. As shown in FIG. 3, a lens array including a plurality of convex lens portions 232 and 232 is formed corresponding to each of the individual light collection regions 231 and 231.
FIG. 4 is a diagram illustrating a state in which the convex lens portion described with reference to FIG. 3 is enlarged and viewed from the side. As shown in the figure, in this example, a large number of convex lens portions 232 and 232 of the lens array are formed to be convex toward the other main surface (front surface) 22 side of the screen 20, and the back surface 21 is planar. However, the configuration of the effective display area 23 is not limited to this, and the effective display area 23 may be formed so that the convex portion is opposite to the above, or may be formed so that both surfaces are convex.

  In addition, as the lens unit, a Fresnel lens, a lenticular lens, or the like can be applied instead of a very general convex lens as described with reference to FIGS. In the present invention, rather than projecting the shape of the image faithfully to the original image, the emphasis is on decorativeness as a bright illumination with high brightness, so the arrangement density of the many convex lens portions of the lens array is somewhat It is allowed to be rough, and is not necessarily arranged regularly in the vertical and horizontal directions, but in such a way that a large number of cylindrical lenses are extended in parallel in the horizontal direction, or suitable for such a case. Even if other optical elements having optical characteristics are applied, display such as special effects can be performed.

  FIG. 5 is a diagram showing another embodiment of the present invention for improving display luminance. In FIG. 5, corresponding parts to those in FIG. 1 are denoted by the same reference numerals, and description of each part is omitted. However, the difference from that in FIG. In order to increase the amount of projection light from the main surface 22 side, another projector 10a that projects the non-image light for increasing the amount of light superimposed on the image projection area by the projector 10 (that is, the effective display area 23 of the screen 20). Is further used. According to this method, a window display with a particularly high luminance that can be clearly seen from the outside at night can be obtained.

    FIG. 6 is a diagram showing another embodiment of the present invention. As in FIG. 1, an image is projected from a known general projector 10 onto one main surface 21 side of the screen 20 (its effective display area 23 a), and the image is projected from the other main surface 22 side of the screen 20. A window display method to be observed. However, in this example, the incident light from the projector is incident on each light-receiving surface that is densely arranged along the main surface 21 (over the entire surface of the effective display area 23a) as the screen 20. A plurality of active light emitting elements 233 and 233 for amplifying light and projecting light from the respective light emitting surfaces arranged densely corresponding to the respective light receiving surfaces along the other principal surfaces are provided. It is characterized by applying what is formed.

  FIG. 7 is a schematic diagram showing an active light emitting element 233 applied to the effective display area 23a of the screen 20 of FIG. 7A includes a light receiving element portion 233a that receives projection light from the projector 10, an amplifying portion 233b that includes an active element that amplifies an optical signal received by the light receiving element portion 233a, The light emitting element portion 233c that emits light by the output of the amplifying portion 233b and projects light from the other main surface 22 side is integrally combined to form one display cell.

  FIG. 7B shows a display cell having substantially the same structure as that of FIG. 7A, and corresponding parts to FIG. 7A are given the same reference numerals and description of each part is omitted. However, the difference from that of FIG. 7A is that the light receiving surface of the light receiving element portion 233a has directional optics by a lens portion or the like for providing directivity in accordance with the incident direction of the projection light from the projector 10. The element part 233d is added. Therefore, if the effective display area 23a of the screen 20 is configured by applying the display cell of FIG. 7B, the projector 10 is not easily affected by light from a direction deviating from the projection direction of the image by the projector 10. The video can be displayed well.

  FIG. 7C is also a display cell having substantially the same structure as that of FIG. 7A, and corresponding parts to FIG. 7A are denoted by the same reference numerals, and description of each part is omitted. However, the difference from FIG. 7A is that two connectors 233e are formed on the upper surface side of the display cell for convenience in forming an aggregate in combination with the display cell similar to the self. The effective display region 23a of the screen 20 can be configured by a series of couplings such as coupling to a coupling recess (not shown) formed on the lower surface side of the display cell of the other party that is compatible with the coupling 233e. It is a point.

  FIG. 8 is a diagram illustrating a method of supplying operation power to the active light emitting elements applied to the effective display area 23a of the screen 20a as shown in FIG. The effective display area 23a of the screen 20a is configured by a set of display cells as illustrated in FIG. 7, and the power source for operating these display cells is in contact with one side edge in the vertical direction of the screen 20a. It is configured to be supplied through the supporting columnar body 30. As a result, a display cell having a relatively large output can be applied as the active light emitting element applied to the effective display region 23a.

  FIG. 9 is a diagram exemplifying a method of supplying an operation power from a solar cell attached to itself as an active light emitting element applied to the effective display area 23a of the screen 20a as shown in FIG. A light receiving element unit 233a that receives projection light from the projector 10, an amplification unit 233b that includes an active element that amplifies an optical signal received by the light receiving unit unit 233a, and light emitted by the output of the amplification unit 233b. Is combined with the light emitting element portion 233c that projects from the other main surface 22 side as described above to constitute one display cell.

  As shown in the figure, in this display cell, the light receiving element portion 233a and the amplifying portion 233b are integrally formed. A solar cell part 233f is provided in such a form that it is joined to one side edge of the light emitting element part 233c having a light emitting surface at a substantially right angle so that the light receiving surface can efficiently receive sunlight incident obliquely from above. The normal direction of the self is set to an angle that substantially follows the incident direction of sunlight.

  In the case of this display cell, its own operating power supply is covered by the solar cell unit 233f provided as described above. Therefore, even if the effective display area 23a of the screen 20 is configured by applying an active element, it is for a separate operation. Eliminates the inconvenience of having to secure a power supply, and is freed from the inconvenience of having to limit the usage time in consideration of power consumption, making it suitable for long-term use Apparatus and method are realized.

  FIG. 10 is a diagram showing an embodiment when a special effect is obtained in the present invention. As shown in FIG. 10A, as the screen 20 that receives the projection light from the projector 10, at the position thereof, or at the proximity position P 1 (shown by a broken line) of the surface of the screen 20 facing the projector 10, or the screen 20. A special effect auxiliary screen 20 </ b> S as shown in FIG. 10B is installed at a proximity position P <b> 2 (shown by a one-dot chain line) on the surface opposite to the surface facing the projector 10.

  In the special effect auxiliary screen 20S, rectangular transparent condensing optical elements 234 and 234 are arranged in a vertical and horizontal direction in a discrete manner in the in-plane direction of the screen 20, and the transparent condensing optical elements 234 and 234 are flexible. It is configured to be connected by a linear body. The special effect auxiliary screen 20S is applied in place of the screen 20, or is installed at the above-described position P1 or P2, so that the transparent condensing optical elements 234 and 234 that are discretely aligned vertically and horizontally can be used. Due to the interestingness of the arrangement or the special effects caused by fluctuations and the like due to the transparent condensing optical elements 234 and 234 being connected by the flexible linear bodies 235 and 235, A highly decorative illumination with different taste is realized. If a simple transparent plate is used instead of the transparent condensing optical elements 234 and 234 or a part thereof, a special effect different from that described above can be obtained.

  Overall, according to the present invention, it is a decoration as illumination at night and other windows in the Christmas season and other times, and it displays a video image pattern, or even a still image frequently. A simple and easy-to-implement window display method capable of changing the display and a screen applied to this method can be realized.

It is a figure showing the window display method as embodiment of this invention. It is a figure which represents typically the mode of the effective display area | region of the surface of the front side of the screen of FIG. It is a figure which represents typically the mode of the convex lens part formed in the effective display area | region of FIG. It is a figure showing a mode that the convex lens part of FIG. 3 was expanded and it looked at from the side surface. It is a figure showing other embodiment of this invention for improving the brightness | luminance of a display. It is a figure showing other embodiment of this invention. It is a schematic diagram showing the active light emitting element applied to the effective display area of a screen. It is a figure which illustrates the supply method of the operation power supply to the active light emitting element applied to the effective display area of a screen. It is a figure which illustrates the method of supplying an operation power supply from the solar cell attached to the self as an active light emitting element applied to the effective display area of a screen. It is a figure showing embodiment in the case of obtaining a special effect in this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Projector 20 ... Screen 21 ... One main surface (back side surface) 22 ... Other main surface (front side surface) 23 ... Effective display area 30 ... Columnar body 231 ... Condensing area | region 232 ... Convex lens part 233 ... Active light emission Element 234 ... Transparent condensing optical element 235 ... Linear body

Claims (11)

  A window display method in which an image is projected from a projector onto one main surface side of a transparent screen, and the image is observed from the other main surface side of the screen. By condensing each of the condensing areas, which are each small area set by dividing the effective display area of one or both main surfaces into a plurality of areas, the resolution of the image by the image light projected from the projector is the original image And a condensing reprojection unit that re-projects from the other main surface side to the outside by increasing the luminance of the emitted light for each individual condensing region higher than in the corresponding small region of the original image. A window display method characterized by applying a processed one.   2. The window display according to claim 1, wherein the screen is configured to perform light collection for each of the plurality of light collection regions by a convex lens portion formed corresponding to each of the plurality of light collection regions. Method.   2. The window according to claim 1, wherein the screen is configured to perform light collection for each of the plurality of light collection regions by using a Fresnel lens portion formed corresponding to each of the plurality of light collection regions. Display method.   2. The window according to claim 1, wherein the screen is applied with a lenticular lens portion formed so as to correspond to each of the plurality of light collection regions. Display method.   2. The window according to claim 1, further comprising another projector that projects non-video light for increasing the amount of light so as to overlap an image projection area of the one projector that projects an image on one main surface side of the screen. Display method.   A window display method in which an image is projected from a projector onto one main surface side of a screen, and the image is observed from the other main surface side of the screen. Incident light from the projector that is incident on each light receiving surface arranged densely along the light path is amplified and densely arranged along the other main surface corresponding to each light receiving surface. A window display method comprising applying a plurality of active light emitting elements for projecting light to the outside from each light emitting surface provided.   A screen applied to a window display method in which an image is projected from a projector onto one main surface side of the screen and the image is observed from the other main surface side of the screen, and either one of the screens Alternatively, a plurality of light collecting areas are set to be dispersed in the effective display areas of both main surfaces, and the image light projected from the projector is collected for each light collecting area that is each of the small areas that are set to be dispersed. The resolution of the image is made coarser than in the original image, and the luminance of the emitted light for each of the individual light collection regions is made higher than that in the corresponding small region of the original image, and reprojected from the other main surface side to the outside. A screen characterized in that a condensing reprojection part is formed.   The screen according to claim 7, wherein the condensing reprojection unit includes a convex lens unit formed corresponding to each of the plurality of condensing regions.   The screen according to claim 7, wherein the condensing reprojection unit includes a Fresnel lens unit formed corresponding to each of the plurality of condensing regions.   The screen according to claim 7, wherein the condensing reprojection unit includes a lenticular lens unit formed corresponding to each of the plurality of condensing regions.   A screen applied to a window display method in which an image is projected from a projector onto one main surface side of the screen, and the image is observed from the other main surface side of the screen. Amplifying the incident light from the projector that is incident on each light receiving surface arranged in a densely packed manner along the other main surface, and densely gathering corresponding to each light receiving surface along the other main surface A screen comprising a plurality of active light emitting elements for projecting light to the outside from each light emitting surface provided.

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